package com.shiyi.shiyiaiagent.rag;


import org.springframework.ai.chat.client.ChatClient;
import org.springframework.ai.chat.model.ChatModel;
import org.springframework.ai.rag.Query;
import org.springframework.ai.rag.preretrieval.query.transformation.QueryTransformer;
import org.springframework.ai.rag.preretrieval.query.transformation.RewriteQueryTransformer;
import org.springframework.stereotype.Component;

/**
 * 查询重写器
 */
@Component
public class QueryReWriter {
  private final QueryTransformer queryTransformer;

  public QueryReWriter(ChatModel dashscopeChatModel) {
    ChatClient.Builder builder = ChatClient.builder(dashscopeChatModel);
    this.queryTransformer = RewriteQueryTransformer.builder().chatClientBuilder(builder).build();
  }

  /**
   * 执行查询重写
   * @param prompt
   * @return
   */
  public String rewrite(String prompt) {
    Query query = new Query(prompt);
//    查询重写
    Query transformQuery = queryTransformer.transform(query);
    return transformQuery.text();
  }
}
